CN205495311U - Flue gas ozone oxidation SOx/NOx control system - Google Patents

Flue gas ozone oxidation SOx/NOx control system Download PDF

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Publication number
CN205495311U
CN205495311U CN201620165327.9U CN201620165327U CN205495311U CN 205495311 U CN205495311 U CN 205495311U CN 201620165327 U CN201620165327 U CN 201620165327U CN 205495311 U CN205495311 U CN 205495311U
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China
Prior art keywords
flue gas
ozone oxidation
denitration
desulfuration
ozone
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Expired - Fee Related
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CN201620165327.9U
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Chinese (zh)
Inventor
柴苗峰
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Sichuan Caring Environment Engineering Co ltd
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Sichuan Caring Environment Engineering Co ltd
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Abstract

The utility model discloses a flue gas ozone oxidation SOx/NOx control system, including flue gas inlet, dust remover, draught fan, spray cooling tower and the chimney that connects gradually, its characterized in that: be equipped with dust remover in advance on the pipeline of flue gas inlet and dust remover, the dust remover is equipped with a plurality of stands and is fixed with a plurality of high temperature resistance tows on the stand in the inside of casing including the casing that is horizontal installation in advance, be equipped with the ozone oxidation ware on the pipeline between draught fan and the spray cooling tower, the ozone oxidation ware is including the reactor that is horizontal installation to and set up oxygenerator and the ozone generator outside the reactor, install whirl board and ozone filling opening in the entrance of reactor, be equipped with binocular SOx/NOx control tower on the connecting line between spray cooling tower and the chimney. This system adopts half half -dried wet process technology, has efficiency height, operation stability, small investment, the running cost is low, the suitability is strong has a few.

Description

A kind of flue gas by ozone oxidation system for desulfuration and denitration
Technical field
This utility model relates to smoke processing system, particularly relates to a kind of flue gas by ozone oxidation system for desulfuration and denitration.
Background technology
The current fuel of China based on coal, the SO2, Nox(X=2 or 3 produced in coal combustion process) and pollutant such as heavy metal, the impact producing environment is the most serious.Power plant boiler uses Wet Flue Gas Desulfurization Technology in a large number to the control of SO2 at present, and desulfuration efficiency is up to 90%.For the control of NOx, conventional control method has (furnace rear) control methods after stove interior burning control methods and burning.Furnace rear control methods component selections on-catalytic SNCR method and selective catalysis SCR law technology.In stove, Combustion System is low with SNCR law technology, low cost, efficiency are low, and efficiency is about 50%, it is impossible to meet the emission request of increasingly stringent.SCR law technology is domestic current maximally effective low NOx control technology, and efficiency can reach 80%, but one-time investment is very big, and owing to needs use special-purpose catalyst and heat, causes operating cost high.If introducing SCR technology on the basis of Wet Flue Gas Desulfurization Technology again, huge investment and operating cost certainly will be increased.
Utility model content
The purpose of this utility model is to overcome the defect of prior art, it is provided that a kind of flue gas by ozone oxidation system for desulfuration and denitration, and this system uses semi-dry desulfurization technique, has that efficiency is high, stable, small investment, operating cost are low, the suitability is strong a little.
The technical solution adopted in the utility model is:
A kind of flue gas by ozone oxidation system for desulfuration and denitration, including the gas approach being sequentially connected with, cleaner unit, air-introduced machine, water cooling tower and chimney, it is characterised in that:
Being provided with pre-duster on the pipeline of described gas approach and cleaner unit, pre-duster includes in horizontally-mounted housing, is provided with some columns in the inside of housing and is fixed with some resistant to elevated temperatures fibre bundles on column;
Ozone oxidation device it is provided with on pipeline between described air-introduced machine and water cooling tower, ozone oxidation device includes in horizontally-mounted reactor, and the oxygenerator that is arranged on outside reactor and ozonator, spiral board and ozone inlet are installed in the porch of reactor, the oxygen that oxygenerator produces becomes ozone through ozonator effect, then through the release of ozone inlet and enters inside reactor with flue gas;
Bitubular desulphurization denitration tower it is provided with on connecting line between described water cooling tower and chimney.
Further, the internal diameter of described housing more than between gas approach and cleaner unit the internal diameter of pipeline.
Further, the inwall at described reactor is provided with some discontinuous baffle plates along the hand of spiral.
Further, the angle between described baffle plate and reactor wall is 50 ° ~ 80 °.
Further, described bitubular desulphurization denitration tower includes urceolus and the porous inner cylinder of push pipe closed lower opening, it is provided with flue gas inlet tube and slag-drip opening in the lower end of urceolus, and flue gas mouth inlet tube extends to inside urceolus, it is provided with some powder nozzles and spray nozzle in the inner side of urceolus and the inner side of porous inner cylinder, powder nozzle is connected with calcium oxide storage tank, and spray nozzle is connected with tap water pipe line.
Further, described porous inner cylinder is positioned at urceolus center position, and the lower end of porous inner cylinder is horn mouth.
Further, the inwall of described water cooling tower is enamel or rustless steel.
Further, the inwall of described urceolus and the inside and outside wall of porous inner cylinder are enamel or rustless steel.
Further, the position random distribution of described powder nozzle and spray nozzle.
Further, the pipeline that described powder nozzle stores up on tank connected pipeline with calcium oxide and spray nozzle 20 is connected with tap water pipe line is provided with impulse electromagnetic valve.
The beneficial effects of the utility model are:
1, this utility model simple in construction, uses wet processing and dry process technique to combine, and small investment, operating cost are low, and corrosivity is little, floor space is few, process.Compared with wet desulfurization system, eliminate pulping system, change into spraying into CaO powder and water smoke.Compared with dry method desulfuration system, overcome in-furnace calcium spraying method SO2 and CaO reaction efficiency is low, the shortcoming of response time length, improve the utilization rate of desulfurizing agent, and technique is simple, has good development prospect.
2, this utility model relate to pre-duster, utilizes the adsorption of fibre bundle, is stopped by the big dust particle in flue gas, reduces the operating pressure of follow-up equipment.
3, this utility model use ozone as oxidant, can react with the lower nitrogen oxides in flue gas rapidly, response speed is fast, efficiency is high, ozone oxidation device is arranged on before air-introduced machine, ozone is mixed through air-introduced machine, and the Quick Oxidation reaction to lower nitrogen oxides has preferable facilitation, can also reduce the corrosiveness that air-introduced machine is caused by flue gas simultaneously.
4, by spraying the setting of condensing tower in this utility model, flue gas is played the effect of cooling, realizes the effect of two-stage dust removal simultaneously.On the other hand, spray condensing tower inwall enamel or rustless steel are made, and its resistance to elevated temperatures is good, and acid-alkali-corrosive-resisting, and tower body itself is defined good protective effect, extend the service life of spray condensing tower.Moreover, the recirculated water of spray condensing tower spray possesses the effect of certain desulphurization and denitration, can reach more than 30%.
5, this utility model uses bitubular desulphurization denitration Deethanizer design, flue gas enters bitubular desulphurization denitration tower and enters porous inner cylinder then in transferring to urceolus, during transfer, powder nozzle and spray nozzle intermittent ejection calcium oxide and water smoke, process SO2 in flue gas, Nox(X=2 or 3), reach discharge standard.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
In order to the advantage making the purpose of this utility model and technical scheme is clearer, below in conjunction with accompanying drawing and example, this utility model is further elaborated.
As shown in Figure 1, a kind of flue gas by ozone oxidation system for desulfuration and denitration, including the gas approach 1 being sequentially connected with, cleaner unit 2, air-introduced machine 3, water cooling tower 4 and chimney 5, it is characterised in that:
Being provided with pre-duster on the pipeline of described gas approach 1 and cleaner unit 2, pre-duster includes, in horizontally-mounted housing 6, being provided with some columns 7 in the inside of housing 6 and being fixed with some resistant to elevated temperatures fibre bundles 8 on column 7;
It is provided with ozone oxidation device on pipeline between described air-introduced machine 3 and water cooling tower 4, ozone oxidation device includes in horizontally-mounted reactor 9, and the oxygenerator 10 that is arranged on outside reactor 9 and ozonator 11, spiral board 12 and ozone inlet 13 are installed in the porch of reactor 9, the oxygen that oxygenerator 10 produces becomes ozone through ozonator 11 effect, then discharges through ozone inlet 13 and enters reactor 9 inside with flue gas;
Bitubular desulphurization denitration tower it is provided with on connecting line between described water cooling tower 4 and chimney 5.
Further, the internal diameter of described housing 6 more than between gas approach 1 and cleaner unit 2 the internal diameter of pipeline, flow of flue gas rate reduction in housing 6, beneficially fibre bundle 8 capture the dust in flue gas, reduce the operating pressure of subsequent processing device.
Further, the inwall at described reactor 9 is provided with some discontinuous baffle plates 14 along the hand of spiral, extends ozone and the incorporation time of flue gas so that ozone can fully react with the lower nitrogen oxides in flue gas.
Further, the angle between described baffle plate 14 and reactor 9 inwall is 50 ° ~ 80 °, extends ozone and the incorporation time of flue gas.
Further, described bitubular desulphurization denitration tower includes urceolus 15 and the porous inner cylinder 16 of push pipe closed lower opening, flue gas inlet tube 17 and slag-drip opening 18 it is provided with in the lower end of urceolus 15, and flue gas inlet tube 17 extends to inside urceolus 15, some powder nozzles 19 and spray nozzle 20 it is provided with in the inner side of the inner side of urceolus 15 and porous inner cylinder 16, powder nozzle 19 is connected with calcium oxide storage tank, and spray nozzle 20 is connected with tap water pipe line.Flue gas is long-time in urceolus 15 and porous inner cylinder 16 to stop the longer time and reacts with calcium oxide and water, produces the material such as calcium sulfate and calcium nitrate.
Further, described porous inner cylinder 16 is positioned at urceolus 15 center position, and the lower end of porous inner cylinder 16 is horn mouth, and then flue gas shifts to urceolus 15 in being introduced into porous inner cylinder 16.
Further, the inwall of described water cooling tower 4 is enamel or rustless steel, and anticorrosion increases the service life.
Further, the inwall of described urceolus 15 and the inside and outside wall of porous inner cylinder 16 are enamel or rustless steel, and anticorrosion increases the service life.
Further, described powder nozzle 19 and the position random distribution of spray nozzle 20, utilize flow of flue gas that calcium oxide is uniformly dispersed, while ensureing desulfurized effect, lower the consumption of calcium oxide, save processing cost.
Further, the pipeline that described powder nozzle 19 stores up on tank connected pipeline with calcium oxide and spray nozzle 20 is connected with tap water pipe line is provided with impulse electromagnetic valve, while ensureing desulfurized effect, lowers the consumption of calcium oxide, saves processing cost.
Operation principle of the present utility model is:
Flue gas gas approach 1 enters in pre-duster, and due to the adsorption of fibre bundle 8, the dust in flue gas can stop, subsequently in cleaner unit 2, goes out most dust.Oxygen prepared by oxygenerator 10 is converted into ozone and delivers at ozone inlet 13 by ozonator 11, and ozone and flue gas are in spiral board 12 rotates into reactor 9, and the lower nitrogen oxides in flue gas reacts with ozone.Subsequently enter in water cooling tower 4, cooling, cooling, and partial desulfurization denitration, subsequently in bitubular desulphurization denitration tower, the lime powder at flue gas and powder nozzle 19 and spray nozzle 20 spray and water haptoreaction, produce calcium sulfate and calcium nitrate.Flue gas after up to standard discharges from chimney 5.

Claims (10)

1. a flue gas by ozone oxidation system for desulfuration and denitration, including the gas approach (1) being sequentially connected with, cleaner unit (2), air-introduced machine (3), water cooling tower (4) and chimney (5), it is characterised in that:
The pipeline of described gas approach (1) and cleaner unit (2) is provided with pre-duster, pre-duster includes in horizontally-mounted housing (6), is provided with some columns (7) in the inside of housing (6) and is fixed with some resistant to elevated temperatures fibre bundles (8) on column (7);
It is provided with ozone oxidation device on pipeline between described air-introduced machine (3) and water cooling tower (4), ozone oxidation device includes in horizontally-mounted reactor (9), and it is arranged on the outer oxygenerator (10) of reactor (9) and ozonator (11), spiral board (12) and ozone inlet (13) are installed in the porch of reactor (9), the oxygen that oxygenerator (10) produces becomes ozone through ozonator (11) effect, then through ozone inlet (13) release and with flue gas entrance reactor (9) inside;
Bitubular desulphurization denitration tower it is provided with on connecting line between described water cooling tower (4) and chimney (5).
A kind of flue gas by ozone oxidation system for desulfuration and denitration the most according to claim 1, it is characterised in that: the internal diameter of described housing (6) is more than the internal diameter of the pipeline between gas approach (1) and cleaner unit (2).
A kind of flue gas by ozone oxidation system for desulfuration and denitration the most according to claim 1, it is characterised in that: the inwall at described reactor (9) is provided with some discontinuous baffle plates (14) along the hand of spiral.
A kind of flue gas by ozone oxidation system for desulfuration and denitration the most according to claim 3, it is characterised in that: the angle between described baffle plate (14) and reactor (9) inwall is 50 °~80 °.
A kind of flue gas by ozone oxidation system for desulfuration and denitration the most according to claim 1, it is characterized in that: described bitubular desulphurization denitration tower includes the porous inner cylinder (16) of urceolus (15) and push pipe closed lower opening, flue gas inlet tube (17) and slag-drip opening (18) it is provided with in the lower end of urceolus (15), and flue gas inlet tube (17) extends to urceolus (15) inner side, some powder nozzles (19) and spray nozzle (20) it is provided with in the inner side of the inner side of urceolus (15) and porous inner cylinder (16), powder nozzle (19) is connected with calcium oxide storage tank, spray nozzle (20) is connected with tap water pipe line.
A kind of flue gas by ozone oxidation system for desulfuration and denitration the most according to claim 5, it is characterised in that: described porous inner cylinder (16) is positioned at urceolus (15) center position, and the lower end of porous inner cylinder (16) is horn mouth.
A kind of flue gas by ozone oxidation system for desulfuration and denitration the most according to claim 1, it is characterised in that: the inwall of described water cooling tower (4) is enamel or rustless steel.
8. according to a kind of flue gas by ozone oxidation system for desulfuration and denitration described in claim 5 or 6, it is characterised in that: the inwall of described urceolus (15) and the inside and outside wall of porous inner cylinder (16) they are enamel or rustless steel.
9. according to a kind of flue gas by ozone oxidation system for desulfuration and denitration described in claim 5 or 6, it is characterised in that: described powder nozzle (19) and the position random distribution of spray nozzle (20).
10. according to flue gas by ozone oxidation system for desulfuration and denitration a kind of described in claim 5 or 6, it is characterised in that: the pipeline that described powder nozzle (19) stores up on tank connected pipeline with calcium oxide and spray nozzle (20) is connected with tap water pipe line is provided with impulse electromagnetic valve.
CN201620165327.9U 2016-03-04 2016-03-04 Flue gas ozone oxidation SOx/NOx control system Expired - Fee Related CN205495311U (en)

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Application Number Priority Date Filing Date Title
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107875825A (en) * 2017-12-28 2018-04-06 聂玲 Flue dust removes nitre sulphur removal environmental protection equipment
CN110280091A (en) * 2019-06-27 2019-09-27 苏州蓝正清环保科技有限公司 Photooxidation catalytic unit
CN111135691A (en) * 2020-01-10 2020-05-12 科创扬州环境工程科技股份有限公司 Boiling oxidation deodorization device
CN111617611A (en) * 2020-06-16 2020-09-04 潘帅 Energy-saving environment-friendly desulfurization, denitrification and dust removal device and treatment method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107875825A (en) * 2017-12-28 2018-04-06 聂玲 Flue dust removes nitre sulphur removal environmental protection equipment
CN110280091A (en) * 2019-06-27 2019-09-27 苏州蓝正清环保科技有限公司 Photooxidation catalytic unit
CN111135691A (en) * 2020-01-10 2020-05-12 科创扬州环境工程科技股份有限公司 Boiling oxidation deodorization device
CN111617611A (en) * 2020-06-16 2020-09-04 潘帅 Energy-saving environment-friendly desulfurization, denitrification and dust removal device and treatment method

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CF01 Termination of patent right due to non-payment of annual fee
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Granted publication date: 20160824

Termination date: 20170304